package cn.tedu.hello_two;

import java.util.Scanner;

public class Test4 {
	public static void main(String[] args) {
		int a=new Scanner(System.in).nextInt();
		int b=new Scanner(System.in).nextInt();
		int c=a;
		a=b;
		b=c;
		System.out.println(a);
		System.out.println(b);
	}
}
